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Add code and test for migrating vm.hvm into vm.virt_mode

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This will allow to load old qubes.xml - otherwise previous change render
the system unusable (until manual qubes.xml edit).

QubesOS/qubes-issues#2912
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Marek Marczykowski-Górecki 2017-07-17 12:27:17 +02:00
parent 21940bef90
commit 9ba84ecdad
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2 changed files with 34 additions and 0 deletions
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24
qubes/tests/vm/qubesvm.py
View File

@ -26,6 +26,7 @@ import os
import unittest
import uuid
import datetime
import lxml.etree
import qubes
import qubes.exc
@ -476,3 +477,26 @@ class TC_90_QubesVM(QubesVMTestsMixin, qubes.tests.QubesTestCase):
vm = self.get_vm()
self.assertPropertyInvalidValue(vm, 'backup_timestamp', 'xxx')
self.assertPropertyInvalidValue(vm, 'backup_timestamp', None)
def test_500_property_migrate_virt_mode(self):
xml_template = '''
<domain class="QubesVM" id="domain-1">
<properties>
<property name="qid">1</property>
<property name="name">testvm</property>
<property name="label" ref="label-1" />
<property name="hvm">{hvm_value}</property>
</properties>
</domain>
'''
xml = lxml.etree.XML(xml_template.format(hvm_value='True'))
vm = qubes.vm.qubesvm.QubesVM(self.app, xml)
self.assertEqual(vm.virt_mode, 'hvm')
with self.assertRaises(AttributeError):
vm.hvm
xml = lxml.etree.XML(xml_template.format(hvm_value='False'))
vm = qubes.vm.qubesvm.QubesVM(self.app, xml)
self.assertEqual(vm.virt_mode, 'pv')
with self.assertRaises(AttributeError):
vm.hvm

10
qubes/vm/qubesvm.py
View File

@ -621,6 +621,16 @@ class QubesVM(qubes.vm.mix.net.NetVMMixin, qubes.vm.BaseVM):
#
def __init__(self, app, xml, volume_config=None, **kwargs):
# migrate renamed properties
if xml is not None:
node_hvm = xml.find('./properties/property[@name=\'hvm\']')
if node_hvm is not None:
if qubes.property.bool(None, None, node_hvm.text):
kwargs['virt_mode'] = 'hvm'
else:
kwargs['virt_mode'] = 'pv'
node_hvm.getparent().remove(node_hvm)
super(QubesVM, self).__init__(app, xml, **kwargs)
if volume_config is None: